Question

If $\frac{9}{7}$ and $\frac{a}{63}$ are equivalent fractions, the value of ' a ' is ___.

Answer 1

If $\frac{9}{7}$ and $\frac{a}{63}$ are equivalent fractions, then
$9\times 63=a\times 7$
$\Rightarrow 567=7a$
$\Rightarrow a=\frac{567}{7}$
$\Rightarrow a=81$